DIGESTIVE SYSTEM
Digestion is the process of transforming food previously ingested into simpler substances to be absorbed. Digestion occurs in multicellular organisms such as cells, such as at the subcellular level. This process involves different enzymes. The digestive system is very important in digestion as heterotrophic organisms depend on external sources of raw materials and energy for growth, maintenance and operation. Food is used to build and repair tissues and produce energy.
It is also the process by which food passes through the digestive system is transformed into nutrients and minerals our bodies need.
The food then enters the body through the mouth, which is the first organ of the digestive system. It helps grind food with the teeth for easier swallowing. By swallowing the food, it goes to a tube
long and narrow called the esophagus, which facilitates the passage of food into the stomach, a sac-like pouch. Here, food is
attacked by a series of fluid, called gastric juices that break down food to form a liquid slurry, chyme. This slurry passes into the small intestine, a long narrow tube, several meters in length, from which all the slurry useful substances into the bloodstream. The intestine is composed of the duodenum, jejunum and ileum. The substances in the slurry that can not pass the blood are directed to a wider tube than the last, large intestine fomed by: cecum, colon and rectum. From here, these remains are expelled to the outside as excrements through an orifice, the anus, which is the end of the digestive system.
It is also the process by which food passes through the digestive system is transformed into nutrients and minerals our bodies need.
The food then enters the body through the mouth, which is the first organ of the digestive system. It helps grind food with the teeth for easier swallowing. By swallowing the food, it goes to a tube
long and narrow called the esophagus, which facilitates the passage of food into the stomach, a sac-like pouch. Here, food is
attacked by a series of fluid, called gastric juices that break down food to form a liquid slurry, chyme. This slurry passes into the small intestine, a long narrow tube, several meters in length, from which all the slurry useful substances into the bloodstream. The intestine is composed of the duodenum, jejunum and ileum. The substances in the slurry that can not pass the blood are directed to a wider tube than the last, large intestine fomed by: cecum, colon and rectum. From here, these remains are expelled to the outside as excrements through an orifice, the anus, which is the end of the digestive system.